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Baculum of a domestic dog; The arrow points to the bottom groove where the urethra is located. The tip is to the right. Inside the corpus spongiosum lies the baculum.This allows the male dog to enter into the vagina before the erectile tissue is swollen.
Thus, a cycle may be short, totaling approximately 3 weeks. [21] Horses mate in spring and summer; autumn is a transition time, and anestrus occurs during winter. A feature of the fertility cycle of horses and other large herd animals is that it is usually affected by the seasons. The number of hours daily that light enters the eye of the ...
The sleep cycle is an oscillation between the slow-wave and REM (paradoxical) phases of sleep. It is sometimes called the ultradian sleep cycle, sleep–dream cycle, or REM-NREM cycle, to distinguish it from the circadian alternation between sleep and wakefulness. In humans, this cycle takes 70 to 110 minutes (90 ± 20 minutes). [1]
The heaviest dog was an English Mastiff named Zorba, which weighed 314 pounds (142 kg). [2] The tallest known adult dog is a Great Dane that stands 106.7 cm (42.0 in) at the shoulder. [3] External anatomy (topography) of a typical dog: 1. Head 2. Muzzle 3. Dewlap (throat, neck skin) 4. Shoulder 5. Elbow 6. Forefeet 7. Croup (rump) 8. Leg (thigh ...
Cockerel: a young male chicken [8] Hen: an adult female chicken [9] Pullet: a young female chicken less than a year old. [10] In the poultry industry, a pullet is a sexually immature chicken less than 22 weeks of age. [11] Rooster: a fertile adult male chicken, especially in North America.
Mammal female reproductive system (6 C, 86 P) Pages in category "Animal female reproductive system" The following 2 pages are in this category, out of 2 total.
Another method is vent sexing, a discreet term for checking the chicks’ reproductive organs. Depending on gender, chicks are fed different amounts to optimize their size. Egg producers prize ...
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